Welcome to our Forum. Your questions suggest that you have a misunderstanding of how HIV is transmitted. HIV is transmitted from adult to adult ONLY through unprotected penetrative sexual contact or through injection of infected material DEEP into tissue. It is not transmitted by mosquitoes, from inanimate objects such as table tops (even if there is blood on the table tops, or by scratches as none of these activities result in injection of tissue deep into tissue.

Further, a prick or scratch with a pin is very, unlikely to transmit HIV because the surface of a solid pin does not carry blood the way that a hollow needle does (being in the hollow needle makes it easier for blood to be present and the virus to survive inside of the hollow portion of the needle). Furthermore, the virus begins to die almost immediately upon leaving the body and on contact with the air.

the situations that you describe have no risk for HIV. You should not worry about them and do not need testing. EWH

This will be the last answer to your repetitive questions. Any further questions will be deleted without comment.

Any time blood could be transferred from one person to another, in a needle, in a pin, or in a mosquito there is a theoretical possibility that infection could occur. Some methods are more effective for transferring blood than others- more blood is transferred in a hollow needle than on a solid pin for instance. Thus while there is a theoretical possibility that HIV could be transferred on a head of a pin, just as there is a theoretical possibility that you could be struck by lightning while you are reading this. Both possibilities are so small however as to not be a realistic concern. Thus, while there is a theoretical possibility that HIV could be transmitted on a pin, the mathematical probability of this happening is so small in the situation you described to not be a realistic possibility- hence no risk.

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